Results 1 to 10 of about 22,831 (243)

Optimal Design of Spoke-Type IPM Motor Allowing Irreversible Demagnetization to Minimize PM Weight

open access: yesIEEE Access, 2021
In this study, we introduce an optimal design for a spoke-type interior permanent magnet (IPM) motor that can minimize PM weight by allowing irreversible demagnetization, unlike the conventional motor design method that does not allow irreversible ...
Keun-Young Yoon, Kyu-Yun Hwang
doaj   +2 more sources

OPTIMIZATION OF TIMES OF MAGNETIZATION AND DEMAGNETIZATION OF A STOPPED FREQUENCY-REGULATED ASYNCHRONOUS MOTOR

open access: yesElektrotehnìka ta Elektroenergetika, 2018
Purpose. Obtaining analytical dependencies for calculating the extreme (minimum) values of the main electrical energy losses of a three-phase short-circuited asynchronous engine in the regimes of its magnetization and demagnetization and determining the ...
V.A. Volkov
doaj   +1 more source

Ultrafast demagnetization at high temperatures [PDF]

open access: yesJournal of Physics: Condensed Matter, 2018
Time-resolved pump-probe measurements were made at variable heat accumulation in Co/Pd superlattices. Heat accumulation increases the baseline temperature and decreases the equilibrium magnetization. Transient ultrafast demagnetization first develops with higher fluence in parallel with strong equilibrium thermal spin fluctuations.
F Hoveyda   +3 more
openaire   +3 more sources

On pressure demagnetization

open access: yesGeophysical Research Letters, 1981
The effects of pressure on the ramanent magnetization of rocks may well be important in regions of low geothermal gradients, for example subduction zones, or at localities where a magnetization is associated with a meteorite impact. In a series of experiments undertaken to determine the effects of hydrostatic pressure on the saturation magnetic ...
G. W. Pearce, J. A. Karson
openaire   +1 more source

Performance comparison between rotor flux-switching and stator flux-switching machines considering local demagnetization

open access: yesAIP Advances, 2017
This paper investigates the local permanent magnet (PM) demagnetization characteristics of stator-PM flux-switching (SPM-FS) machine and rotor-PM flux-switching (RPM-FS) machine.
Peng Su, Wei Hua
doaj   +1 more source

Behavior of Greigite‐Bearing Marine Sediments During AF and Thermal Demagnetization and Its Significance

open access: yesGeochemistry, Geophysics, Geosystems, 2020
Gyro‐remanent magnetization (GRM) is a frequently occurring yet unwanted remanence contamination for certain samples during alternating field (AF) demagnetization of the natural remanent magnetization.
Zongqi Duan   +4 more
doaj   +1 more source

Demagnetization Effect in a Meander-Core Orthogonal Fluxgate Sensor

open access: yesMicromachines, 2021
Demagnetization effect plays an important role in the magnetic core design of the orthogonal fluxgate sensor. In this paper, a meander-core orthogonal fluxgate sensor based on amorphous ribbon is described.
Shaotao Zhi   +6 more
doaj   +1 more source

A Novel Method for Automatically and Accurately Diagnosing Demagnetization Fault in Direct-Drive PMSMs Using Three PNNs

open access: yesApplied Sciences
Direct-drive permanent magnet synchronous machines (DDPMSMs) have recently become an ideal candidate for applications such as military, robotics, electric vehicles, etc.
Yiyong Xiong   +4 more
doaj   +1 more source

Experimental Study on Magnetization and Demagnetization Characteristics of X70 Steel Pipe

open access: yesShiyou jixie, 2022
The remanence in the pipe not only affects the detection accuracy, but also accelerates the corrosion rate in the pipe. In order to study the magnetization and demagnetization characteristics of X70 steel pipe, based on the analysis of material ...
Song Fulin, Zhao Hong
doaj  

Fundamental Understanding of Magnetic Reconnection via Spiral CT Scan. V. Ion Demagnetization, Electron Demagnetization, and Hall Effect

open access: yesThe Astrophysical Journal
For the first time, we reveal the distribution of ion demagnetization, electron demagnetization, and Hall effect around a reconnection X-line by using the spiral CT scan technique, which is a novel technique analogous to that in the hospital. This X-line
H. S. Fu, Z. Wang, J. B. Cao
doaj   +1 more source

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